Combined split and bar-cutting power-shears.



No. 723,599. 'BATBNTED MAR. 24, 1903.

I. GRIMM.

COMBINED SPLIT AND BAR CUTTING POWER SHEARS.

' APPLICATION FILED DBO. 2o. 1992.

E0 MODEL.

of, attention being called to the accompany- `marked thereon, which formalso a part of UNITED STATES IGNAZ GRIMM, OF CINCINNATI, OHIO.

COMBINED SPLIT AND BAR- CUTTING POWER-*SH EARS.

SPECIFICATION forming' part of Letters Patent N0. 723,599, dated March24, 1903.

' Application liled December 20, 1902. Serial No. 135,985. (No model.)

To @ZZ whom it may concern,.-

Be it known that-I, IGNAZ GRIMM,a citizen of the United States, andaresident of the city of Cincinnati, inv the county of Hamilton andState of Ohio, have invented a certain new and useful Combined Split andBar-Cutting Power-Shears; and I do declare the following to be a clear,full, and exact description thereing drawings, with the referencecharacters this specification.

This invention relates to improvements in the construction andarrangement of powershears for cutting metal, more particularly iron andsteel, and in shape of plates or bars, which latter, again, may be fiatbars or socalled angle-bars or angle-irons or other shapes. The machinesnow in use for this class of work are specially constructed to suit theparticular metalv to be worked as to its shape and form, so that thereare so-called split-shears to cut metal plate, bar-shears to cut ilatbar-iron, and angle-shears to cut angle-bars. There are also machineswhich may be arranged to permit cutting of either dat or angle bars onthe same machine, and there are still others which may be adjusted topermit cutting of either plate or ilat bars, the capacity of thesemachines adapted to such alternate use being, however, generally limitedas regards one of the kinds of work to be done thereon to thedimensions, particularly length, of such work, so that in all cases ofsuch possible double use the machine as to one of the uses cannot beused as'fully and advantageously as a machine constructed solely for oneparticular use.

The object of my invention is therefore to construct a shear adapted foruse in connection with all the shapes of iron mentionedthat is, plate,dat bars, or angle-bars-the use in connection with each shape to be asconvenient and as unrestricted as in a machine specially constructed forthe particular kind ot work.

In the following specilication and particularly pointed out in theclaims is found a full description of theinvention, together with itsoperation, parts, and construction, which latter is also illustrated inthe accompanying drawings, in which- Figure 1 shows the front side of myimproved power-shear, the same being arranged to cut bariron,particularly angle bars, a plate of metal being also shown in dottedlines as it appears during its passagethrough the shears while beingcut. Fig. 2 is an end View of Fig. 1 with the lower part in' section.Fig. 3 is a top View ofthe lower part of the machine shown in thepreceding figure-that is, it shows its bed or anvil.v Fig. l:shows afront view of my improved shear embodied in a different type of frameand used for cutting plate metal. Fig. 5 is a side view of Fig. 11; andFig. 6 shows a part of Fig. l-that is, the operative part-and arrangedfor cutting fiat bars.

In such machines two shear-blades or cutting-jaws are generally used, ofwhich one is held in a stationary position, while the other, usually theupper one, has a movement to and from it. The mechanical means wherebythis movement is obtained forms no part of my invention.

9 is thelower jaw, seated in a socket. 10, contained in the bed oranvil11, formed by the lower part -of the machine-frame and held there bybolts l2. The upperjaw (indicated by 13) has two parallel sides '13EL13@ and is supported by guiding means in a manner so that whenreciprocated it'moves to and from the lower jaw at an angle. means maybe simply guideways,within which the side edges 13 13 slide, or it maybe an entire inclosing casing, as shown, and being formed in part by aportion 14 of the upper part of the main frame and a removablecap 15.The lower part of this jaw 13 is shaped to form two cuttingedges, one,13b, and another, 13G, arranged substantially at right angles to eachother. Of these two cutting edges the lower one, 13b, is substantiallyparallel to cutting edge 9a of the lower cutting-jaw 9, subject to suchdivergence as is usually provided to obtain a proper self-clearing shearcut. Thereis, further, an upright cutting-jaw 16, fitted into a socket17 and held therein by bolts 18. It is arranged closely to jaw ,9, sothat the cutting edge 16a of it forms with cutting edge 9a a continuousangular cutting edge, as shown in the drawings, most clearly in Fig. 1.The other or upright cutting edge 15c on the movable jaw is arrangedsubstan- These guiding IOO tially parallel to this cutting edge 1G ofthe upright jaw 16, subject to such slight divergence necessary for aproper shearing cut, so that, as will be seen, fourcutting edges arecapable ot entering simultaneous/ly into action. Of these 13b 13c form acontinuous angular cutting edge on the upper-jaw and work in conjunctionwith the continuons angular edges 9a and 161 below. Each cutting-jaw isremovably attached for grinding or renewal,

.the lower jaws 9 and 16 from their sockets 10 and 17 and the upper jaw13 from within its guiding means or from a carrier 19, to which it isdetachably connected. It will now be seen that with this upright jaw 16in position angle-bars A maybe cut, as shown in Fig. 1, while when it isremoved the machine may be used as a so-called split-shear for cuttingplate metal P, as shown in Figs. 4 and 5 and in dotted lines in Fig. 1.Flat bars F may be cut in either conditionf-that is, with jaw 16 removedOr in position, as shown in Figs. 1 and 3 or 6. In the latter case thisjaw may serve as a guide and stop for the i'lat bars while restingagainst it, as shown in Fig. 3, and the same as is shown in case of theangle-bar in Fig. 1.

The reciprocal motion of the upper jaw to and from the two lower onesmay be obtained by any mechanical means. It may be connected to anoscillating` beam 20, to which its carrier 19 is attached by a link 21and which is actuated by a crank or eccentric 22, operated by apower-driven shaft 23, all as shown in Figs. 1 and 2, or the machine maybe constructed on the customary type used in powerpunches and shears andas shown in Figs. 4 and 5, the upper jaw being operated from apower-driven shaft 24 by means of an, intermediate eccentriclink, crank,or cam. As before stated, however, no invention is claimed for thesemechanical means for operating the upper jaw. The frame should in eachcase be so arranged as to form no obstruction to .the advancing metalwhen splitting plate, nor should any part of it be in the way wheninserting long bars. In the frame shown in Figs. 1 and 2 thisrequirementis fully realized, the upper part in front being set back, asshown at 25, permitting one of the separated parts of the plateresulting from the splitting of the same to pass straight on. On therear side the other of the split parts of the plate passes under thisoffset, as shown at 26 in Fig. 2, also in Fig. 4, and in dotted lines inFig. 1. The metal readily passes under this latter ottset by reason of atendency to hang and curve downwardly, due to the action of the upperjaw on this part of the split'plate. In either case, either by formationot' the frame or by attachment, a shoulder 27 should be provided on theframe for the upper end of upright jaw l16 to bear against, so as toreinforce its position against the action of the upper jaw when inangle-cutting cutting edge 13C moves toward it. Customary adjustablegages and stops against which the ends or sides of the metal are shovedto determine the exact position of the cuts and to facilitate work whenmuch of the same kind is to be done are implied, but not shown.

Having described my invention, I claim a new- 1. In a power-shear forsplitting plate metal and for cutting bar metal, the combination of alower cutting-jaw, an upright cuttingjaw, the cutting edges of the twobeing so arranged as to form a contin nous angular cut-- ting edge, theupright jaw being attached in a manner to be removable independently ofthe other one, an upper jaw having two cutting edges also arranged at anangle toveach other and means for operating this latter jaw in a mannerthat its cutting edges are capable of operating simultaneously inconjunction with either or the two other cutting edges.

2. In a power-shear for splitting plate metal and for cutting bar metal,the combination of a lower cutting-jaw, having a substantiallyhorizontal cutting edge, an upright cuttingjaw having a substantiallyvertical cutting edge, both these cutting edges being continuous, asocket for each of these jaws, means for securing each jaw in its socketin a manner to render each independently removable, an upper jaw havingat its lower end two cutting edges 13b 13c arranged at an angle to eachother and forming a continuous cutting edge, two parallel guiding-edges13 on this jawabove its cutting edge, mechanism for moving this upperjaw to and from the other jaws and supporting means engaging its guidingedges 13a in a manner that in the movement of the upper jaw toward thelower one, the apex ot the angle of the upper cutting edge is caused tomove toward the apex of the rentering angle formed by the lower cuttingedge.

In testimony whereof I hereunto set my signature in the presence ot' twowitnesses.

' IGNAZ GRIMM.

Witnesses C.' SPENGEL, ARTHUR KLINE.

IOO

